TC-7610

[SM961]

TC-7610 is rebooting on his own any ideas?

[PharmDawgg]

Possible out of speck power levels from your isp to your modem. Could also be a faulty modem but lets' check this first.  Go here to check your power levels. I am assuming you have cable internet. This does not pertain to dsl. May need to contact your isp. 

 

Cable modems often have a diagnostics web page that can help view the cable signal details (signal strength, upstream/downstream power levels, SNR, etc.). This information can be very useful in troubleshooting common connection issues. You can use the values below as a guideline as to what good "signal levels" are.

Downstream Power (-15dbmV to +15dbmV) - measure of the signal level received by the cable modem
Most modems are rated from -15dB to +15dB, however it's best to have it between +8dB and -8dB. Anything less or more than that and you may have quality issues. You can remove splitters on the line if you need to raise and clean up your signal level a bit. You can also use a tap (directional coupler) to get a cleaner signal to the cable modem instead of a splitter.

Upstream Power / Modulation(37dbmV to 55dbmV) - the strength of signal transmitted by the cable modem
Generally a lower this number is better. Above 55dB will most likely cause problems, over 57dB and you probably won't be able to connect. Ideally between 42 and 50dB. Lower than 40 may start introducing some packet loss (especially if you have much noise on the line). If you hit 58 the modem will likely drop the connection and resync. 

Signal/Noise Ratio (SNR , >30dB) - measure of how clear the signal is
SNR is best over 30, (the higher the better, might work well with as low as 25 at times). Anything less than 25 will cause dropped connections, packet loss, slow transfers, etc. This is true for both the "Downstream SNR" and the "Upstream SNR", which may be different values. Typically, cable modems show the Downstream SNR, the Upsteram SNR can only be calculated at the remote end of the coax (usually at the node). Just remember that higher SNR means cleaner signal. A value well over 40 may mean you have too much power.
 

[iAmMoDBoX]

Downstream Power (-15dbmV to +15dbmV) - measure of the signal level received by the cable modem

Most modems are rated from -15dB to +15dB, however it's best to have it between +8dB and -8dB. Anything less or more than that and you may have quality issues. You can remove splitters on the line if you need to raise and clean up your signal level a bit. You can also use a tap (directional coupler) to get a cleaner signal to the cable modem instead of a splitter.

 

 

 

I prefer between -5 and +5 for downstream on docsis 3.0

[SM961]

Possible out of speck power levels from your isp to your modem. Could also be a faulty modem but lets' check this first.  Go here to check your power levels. I am assuming you have cable internet. This does not pertain to dsl. May need to contact your isp. 

 

Cable modems often have a diagnostics web page that can help view the cable signal details (signal strength, upstream/downstream power levels, SNR, etc.). This information can be very useful in troubleshooting common connection issues. You can use the values below as a guideline as to what good "signal levels" are.

 

Downstream Power (-15dbmV to +15dbmV) - measure of the signal level received by the cable modem

Most modems are rated from -15dB to +15dB, however it's best to have it between +8dB and -8dB. Anything less or more than that and you may have quality issues. You can remove splitters on the line if you need to raise and clean up your signal level a bit. You can also use a tap (directional coupler) to get a cleaner signal to the cable modem instead of a splitter.

 

Upstream Power / Modulation(37dbmV to 55dbmV) - the strength of signal transmitted by the cable modem

Generally a lower this number is better. Above 55dB will most likely cause problems, over 57dB and you probably won't be able to connect. Ideally between 42 and 50dB. Lower than 40 may start introducing some packet loss (especially if you have much noise on the line). If you hit 58 the modem will likely drop the connection and resync. 

 

Signal/Noise Ratio (SNR , >30dB) - measure of how clear the signal is

SNR is best over 30, (the higher the better, might work well with as low as 25 at times). Anything less than 25 will cause dropped connections, packet loss, slow transfers, etc. This is true for both the "Downstream SNR" and the "Upstream SNR", which may be different values. Typically, cable modems show the Downstream SNR, the Upsteram SNR can only be calculated at the remote end of the coax (usually at the node). Just remember that higher SNR means cleaner signal. A value well over 40 may mean you have too much power.

 

Downstream Bonded Channels

Channel Status Modulation Channel ID Frequency Power SNR 1 Locked QAM256 17 661750000 Hz 8.4 dBmV 38.5 dB 2 Locked QAM256 15 649750000 Hz 8.8 dBmV 38.6 dB 3 Locked QAM256 16 655750000 Hz 8.4 dBmV 38.4 dB 4 Locked QAM256 19 673750000 Hz 8.9 dBmV 38.3 dB 5 Locked QAM256 21 685750000 Hz 8.9 dBmV 38.6 dB 6 Locked QAM256 22 691750000 Hz 9.2 dBmV 38.8 dB 7 Locked QAM256 23 697750000 Hz 9.3 dBmV 39.0 dB 8 Locked QAM256 24 703750000 Hz 9.8 dBmV 39.1 dB

 

Upstream Bonded Channels

Channel Status Channel Type Channel ID Symbol Rate Frequency Power 1 Locked ATDMA 8 5120 ksym/sec 37000000 Hz 41.3 dBmV 2 Locked TDMA 5 2560 ksym/sec 19400000 Hz 39.8 dBmV 3 Locked ATDMA 6 5120 ksym/sec 24200000 Hz 40.8 dBmV 4 Locked ATDMA 7 5120 ksym/sec 30600000 Hz 41.0 dBmV

[SM961]

screenshot

[SM961]

upload

[SM961]

I prefer between -5 and +5 for downstream on docsis 3.0

All seems to be good with my line.

[PharmDawgg]

I am not a specialist but I do agree with I Am MoD BoX  on the download stream.  They seems a little out of spec. On the high side for what I usually see.  I would get a tech from your isp to come out and check your power levels to your modem.  You may need an attenuator but I really would let your isp do this.

[SM961]

I am not a specialist but I do agree with I Am MoD BoX  on the download stream.  They seems a little out of spec. On the high side for what I usually see.  I would get a tech from your isp to come out and check your power levels to your modem.  You may need an attenuator but I really would let your isp do this.

I replaced my tp link with another one and I will give them I call if it happens again.

[SM961]

I am not a specialist but I do agree with I Am MoD BoX on the download stream. They seems a little out of spec. On the high side for what I usually see. I would get a tech from your isp to come out and check your power levels to your modem. You may need an attenuator but I really would let your isp do this.

I called them and they said my levels are within spec or normal levels.

[iAmMoDBoX]

I called them and they said my levels are within spec or normal levels.

 

Do you believe your ISP or some random stranger on the internet? Cause the stranger is telling the truth here.

[SM961]

Do you believe your ISP or some random stranger on the internet? Cause the stranger is telling the truth here.

I called them to have my line checked but they said that there's no need. So they don't want to do it.

[SM961]

Do you believe your ISP or some random stranger on the internet? Cause the stranger is telling the truth here.

I want to fix it myself what would you recommend?

[iAmMoDBoX]

I called them to have my line checked but they said that there's no need. So they don't want to do it.

 

Say it keeps rebooting and it's a brand new modem. They have to check it if you're having problems lol but typically they won't see a problem anyway because they check it for 2 minutes, not a long time.

 

A rebooting modem is either too high upstream power or the modem is broken (very slim chance you got a brand new modem broken) but if you want to go this route first get it replaced from wherever you got it. Including the power supply.

 

Try a different ethernet cable? Make sure it's not covered and well ventilated. It does get pretty warm.

[SM961]

I'm going to keep bugging them then.

[SM961]

Say it keeps rebooting and it's a brand new modem. They have to check it if you're having problems lol but typically they won't see a problem anyway because they check it for 2 minutes, not a long time.

 

A rebooting modem is either too high upstream power or the modem is broken (very slim chance you got a brand new modem broken) but if you want to go this route first get it replaced from wherever you got it. Including the power supply.

 

Try a different ethernet cable? Make sure it's not covered and well ventilated. It does get pretty warm.

[SM961]

Say it keeps rebooting and it's a brand new modem. They have to check it if you're having problems lol but typically they won't see a problem anyway because they check it for 2 minutes, not a long time.

 

A rebooting modem is either too high upstream power or the modem is broken (very slim chance you got a brand new modem broken) but if you want to go this route first get it replaced from wherever you got it. Including the power supply.

 

Try a different ethernet cable? Make sure it's not covered and well ventilated. It does get pretty warm.

Here are the new signal levels...

[iAmMoDBoX]

Here are the new signal levels...

 

I mean that is basically perfect. Although I find it odd that 3/4 of the upstream channels are on ATDMA and one is TDMA... It could also be your upstream SNR which can't be read by you. Someone would have to read that from your ISP's end. If it's too low, when you start using the internet it will reboot your modem. I had that problem with my old VOIP modem. Whenever the phone would ring it was too much for the weak signal and rebooted my modem.

[SM961]

I mean that is basically perfect. Although I find it odd that 3/4 of the upstream channels are on ATDMA and one is TDMA... It could also be your upstream SNR which can't be read by you. Someone would have to read that from your ISP's end. If it's too low, when you start using the internet it will reboot your modem. I had that problem with my old VOIP modem. Whenever the phone would ring it was too much for the weak signal and rebooted my modem.

Someone at DSLreports advised me to add a broadband RF MoCA to bring the Download down a little bit.

     

[iAmMoDBoX]

 

Someone at DSLreports advised me to add a broadband RF MoCA to bring the Download down a little bit.

     

 

 

Nah it's fine... although that couldn't hurt. I would ask a tech to install one next time they're out to your house (if there isn't on already installed somewhere). All that really does is help keep your signals from leaking outside of your house. Nothing to fix or help your signal.

 

Also make sure they check all your splitters and ask them to test your house for noise from the tap.

[SM961]

I mean that is basically perfect. Although I find it odd that 3/4 of the upstream channels are on ATDMA and one is TDMA... It could also be your upstream SNR which can't be read by you. Someone would have to read that from your ISP's end. If it's too low, when you start using the internet it will reboot your modem. I had that problem with my old VOIP modem. Whenever the phone would ring it was too much for the weak signal and rebooted my modem.

Another one.

[iAmMoDBoX]

Another one.

 

Different modem? Still well within spec

[SM961]

Different modem? Still well within spec

Yes, I have two 7610s but their web pages are different.

[iAmMoDBoX]

Yes, I have two 7610s but their web pages are different.

 

One hasn't been updated yet, that's all... Leave it connected for a while and see if it updates/reboots. Is it new? Have you used it before?

[SM961]

Different modem? Still well within spec

These are with the splitter. just testing with and without the splitter but with the second modem.